Effects of grinding corn through a 2-, 3-, or 4-high roller mill on pig performance and feed preference of nursery pigs

dc.citation.jtitleJournal of Animal Science
dc.contributor.authorGebhardt, J. T.
dc.contributor.authorDe Jong, J. A.
dc.contributor.authorTokach, Michael D.
dc.contributor.authorWoodworth, Jason C.
dc.contributor.authorDeRouchey, Joel M.
dc.contributor.authorGoodband, Robert D.
dc.contributor.authorCoble, K. F.
dc.contributor.authorStark, Charles R.
dc.contributor.authorJones, Cassandra K.
dc.contributor.authorDritz, Steven S.
dc.descriptionCitation: Gebhardt, J. T., De Jong, J. A., Tokach, M. D., Woodworth, J. C., DeRouchey, J. M., Goodband, R. D., . . . Dritz, S. S. (2016). Effects of grinding corn through a 2-, 3-, or 4-high roller mill on pig performance and feed preference of nursery pigs. Journal of Animal Science, 94, 101-102. doi:10.2527/msasas2016-215
dc.description.abstractA total of 410 pigs were used in 2 experiments to determine the effects of grinding corn through various roller mill configurations on feed preference and performance of nursery pigs. In Exp. 1, 320 pigs (DNA 400 × 200; initial BW = 10.7 kg) were randomly allotted to 1 of 4 dietary treatments with 16 pens/treatment and 5 pigs/pen for a 21-d growth trial. The 4 dietary treatments used the same corn-soybean meal-based formulation that were mixed from the same batch of ingredients. Corn was ground through the same 4-high roller mill, but using different roller configurations including feed with corn fraction ground to 650 µm using 2 sets of rolls (2-high), feed with corn fraction ground to 495 µm using 3 sets of rolls (3-high), feed with corn fraction ground to 340 µm using 4 sets of rolls in a fine grind configuration (4-high fine), and feed with the corn fraction ground to 490 µm using 4 sets of rolls in a coarse grind configuration (4-high coarse). In Exp. 2, 90 pigs (PIC 327 × 200; initial BW = 12.2 kg) were randomly allotted to 1 of 3 diet comparisons to determine feed preference. The 3 diets compared were the 2-high, 4-high fine, and 4-high coarse configurations. Each pen contained 2 feeders, each containing 1 of the 3 treatment diets. Feeders were rotated once daily within each pen for the 7-d study, with 5 pigs per pen, and 6 pens per comparison. In Exp. 1, there were no differences in ADG, ADFI or G:F between roller mill configurations. Similarly, no differences were observed for caloric efficiency or economics among roller mill configurations. In Exp. 2, when given a choice, pigs consumed 67% (P < 0.05) of the diet containing corn ground through the 2-high roller mill when compared to the diet containing 4-high fine corn. There was no difference in feed consumption comparing diets with 2-high roller mill corn or corn from the 4-high roller mill in a coarse configuration. When comparing corn from the two 4-high configurations, pigs consumed 63% (P < 0.05) of the diet manufactured in the coarse configuration and 37% when manufactured in the fine grind configuration. When given a choice, pigs preferred diets manufactured using a mill configuration producing coarser ground corn (490 to 650 µm) to fine ground corn (340 µm); however, roller mill configuration did not affect performance.
dc.rightsCopyright © 2016. American Society of Animal Science.
dc.subjectRoller Mill
dc.subjectNursery Pigs
dc.subjectFeed Preference
dc.titleEffects of grinding corn through a 2-, 3-, or 4-high roller mill on pig performance and feed preference of nursery pigs


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